Cobra - I use Fire TV devices, along with sound bars and A/V receivers. I control everything (including the Fire TV) with a single Logitech Harmony hub-based remote. Works well and eliminates juggling remotes. I think I saw the Harmony remote on sale today at Amazon.
Yeah, I've looked into that previously. But DW and I really like the feel and simplicity of the Fire TV remote. We bought a sideclick for it to control the AVR and power-down the TV, but that sort-of compromised the simplicity of the design. But as I said, we've been increasingly using the Echo for voice control of the Fire TV. So my goal with the Cube is to possibly eliminate the use of a remote altogether and also increase the number of devices I can control by voice.